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277 B
Ruby
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2016-08-18 22:11:42 +03:00
module Hbc::Utils
module_function
def file_locked?(file)
unlocked = File.open(file).flock(File::LOCK_EX | File::LOCK_NB)
# revert lock if file was unlocked before check
File.open(file).flock(File::LOCK_UN) if unlocked
!unlocked
rescue
true
end
end